Resilient hydraulic actuator

Details Resilient hydraulic actuator Resilient hydraulic actuator

1992-01-14

1993-06-22

Rivell, John

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 47, 2511291, 123 9012, F16K 31124, F01L 902

Patent

active

052210723

ABSTRACT:
A highly efficient all hydraulic poppet valve actuator utilizes fluid spring chambers at each end of travel to store energy. Fluid in a first spring chamber is compressed and the chamber cocked by supplemental hydraulic pressure which also seats a poppet valve. A first activation device cancels this pressure to allow transit of the poppet valve and re-cocking of the second spring chamber. Return activation is caused by cancelling a fluid latch to allow transit back to an initial position which recloses the poppet valve.

REFERENCES:
patent: 534360 (1895-02-01), Collins et al.
patent: 655342 (1900-08-01), Gulland
patent: 3226078 (1965-12-01), Anderson
patent: 3451423 (1969-06-01), Priese
patent: 3674041 (1942-07-01), Beals
patent: 3738337 (1973-06-01), Massie
patent: 4000756 (1977-01-01), Ule et al.
patent: 4831973 (1989-05-01), Richeson, Jr.
patent: 4974495 (1990-12-01), Richeson, Jr.

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